That's exactly what I did. Thanks.
--- In flexcoders@yahoogroups.com, Enjoy Jake <[EMAIL PROTECTED]> wrote:
>
> Perhaps the fix is obvious, but if not just add a couple null
checks. After all, if "colBGs" is null, then it's certainly not going
to be displayed in front of "rowBGs" so there's no need to swap them.
Something like this should do fine:
>
>
> override protected function updateDisplayList
(unscaledWidth:Number, unscaledHeight:Number):void {
> super.updateDisplayList(unscaledWidth, unscaledHeight);
> var rowBGs:DisplayObject = listContent.getChildByName
("rowBGs");
> var colBGs:DisplayObject = listContent.getChildByName
("colBGs");
> if (rowBGs != null && colBGs != null) {
> var rowBGIndex:int = listContent.getChildIndex
(rowBGs);
> var colBGIndex:int = listContent.getChildIndex
(colBGs);
>
> if (colBGIndex > rowBGIndex) {
> listContent.swapChildrenAt(rowBGIndex,
colBGIndex);
> }
> }
> }
>
>
>
> ----- Original Message ----
> From: Alex Harui <[EMAIL PROTECTED]>
> To: flexcoders@yahoogroups.com
> Sent: Tuesday, July 1, 2008 10:02:59 AM
> Subject: RE: [flexcoders] override updateDisplayList
>
>
> Probably. If in production the data is
> coming off a server and isn¢t ready right away, you could be going
> through updateDL when there aren¢t any rows to draw so the rowBG and
> colBG don¢t exist yet
>
>
> ________________________________
>
> From:[EMAIL PROTECTED] ups.com [mailto: [EMAIL PROTECTED]
ups.com ] On Behalf Of markgoldin_2000
> Sent: Tuesday, July 01, 2008 9:11
> AM
> To: [EMAIL PROTECTED] ups.com
> Subject: [flexcoders] override
> updateDisplayList
>
> I am geting different results if I override
> updateDisplayList:
> override protected function updateDisplayList( unscaledWidth:
Number,
> unscaledHeight: Number):void
> {
> super.updateDisplay List(unscaledWid th, unscaledHeight) ;
> var rowBGIndex:int = listContent. getChildIndex
> (listContent. getChildByName( "rowBGs") );
> var colBGIndex:int = listContent. getChildIndex
> (listContent. getChildByName( "colBGs") );
> }
> When I run it from production I am getting this:
> TypeError: Error #2007: Parameter child must be non-null.
> at flash.display: :DisplayObjectCo ntainer/getChild Index()
> at yardmodel.modulecod e::RowColorGrid/ updateDisplayLis t()
> at mx.controls. listClasses: :ListBase/ validateDisplayL ist()
> at mx.managers: :LayoutManager/ validateDisplayL ist()
> at mx.managers: :LayoutManager/ doPhasedInstanti ation()
> at Function/http://adobe. com/AS3/2006/ builtin:: apply()
> at mx.core::UIComponen t/callLaterDispa tcher2()
> at mx.core::UIComponen t/callLaterDispa tcher()
>
> But when I run from Flex Builder it works fine. I am not running
> againt same data, but is that a problem?
>
> Please help.
>
